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services: ntp: Fix KOD warning. 

Otherwise the following messages would be printed by ntpd:

Sep  2 05:18:21 localhost ntpd[15849]: restrict default: KOD does nothing without LIMITE.
Sep  2 05:18:21 localhost ntpd[15849]: restrict ::: KOD does nothing without LIMITED.

Debian uses the same set of "restrict" keywords (see:
https://sources.debian.org/src/ntp/1:4.2.8p13+dfsg-2/debian/ntp.conf).

* gnu/services/networking.scm (ntp-shepherd-service): Add the 'limited'
keyword to both the IPv4 and IPv6 'restrict' directives.
This commit is contained in:
Maxim Cournoyer 2019-09-03 10:05:06 +09:00
parent 08b4a10fa6
commit d4de2f9ea4
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1 changed files with 2 additions and 2 deletions
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gnu/services/networking.scm
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@ -330,8 +330,8 @@ Protocol (DHCP) client, on all the non-loopback network interfaces."
"
# Disable status queries as a workaround for CVE-2013-5211:
# <http://support.ntp.org/bin/view/Main/SecurityNotice#DRDoS_Amplification_Attack_using>.
restrict default kod nomodify notrap nopeer noquery
restrict -6 default kod nomodify notrap nopeer noquery
restrict default kod nomodify notrap nopeer noquery limited
restrict -6 default kod nomodify notrap nopeer noquery limited
# Yet, allow use of the local 'ntpq'.
restrict 127.0.0.1